Oven rack shifting device



Jan. 17, 1933. M. cs. FORSYTH ET AL 1,894,268

OVEN RACK SHIFTING DEVICE Filed July 9. 1931 [I U lnvenror.

F Milo 6. For-syzh, and

W Hay Lens/tel F 6. 5y 9% mmm A fiomeys Patented Jan. 17, 1933 UNITEDSTATES PATENT OFFICE IILO e. roman, or mnmnaroms, mm nor manna, oreaanuwoon, mums.

ovmr nae: ammo nnvron Application filed July 9, 1981. Serial 10.548,602.

may be readily accessible without having to reach back to within theoven.

A rimary object of the-invention 1s to rovide means whereby the ovenracks Wlll automatically be returned to their normal positions withinthe oven upon closing the oven door.

A rimary object, of the inventlon 1s to rovi e in combination with therack mov mg mechanism means whereby anyone or all of the oven racks mayremain stationary within the oven u on opening and closing the oven dooran be independent of the moving mechanism.

A further primary object of the invention is to provide means wherebythe moving mechanism may enga e an rack and carry it along therewith attile w' l of the operator.

These and other objects, such as the new and novel combination of theparticular elements as will be set forth in the accompanying claims,will become apparent in the following description of the invention, asillustrated in one particular form in the accompanying drawing, in whichv Fig. 1, is a fragmentary front elevation of an ovenembodyin ourinvention; v Fi 2, is a vertical longitudinal section on the line 2'.2in. Fig. 1; and

\ Fig. 3, a detail in top plan view of the oven rack engaging andreleasing means.

Like characters of reference indicate like partsv throughout the severalviews in the drawing. I

Within the oven 10 are mounted the, two

racks 11 and 12 a) b horizontally slidably carried between the channelbarguides 13, 14 and 15, 16 in the usual and well known manner. In orderto vary the spacin between the ra'cks and between the top an bottom ofthe oven, additional guides 17 18 and 19, 20 are provided to receive theracks. All of these rack guides are spaced inwardly from the side wallsof the oven by being supported and secured by their ends to the cornerposts of the oven.. v

On each side of the oven, between the rack guides and the side walls,are fixed in parallel relation, the upper track 21 and the lower track22, each having an opposin U-shaped channel fromwhich a supportinglegextends over and against and secured along the oven side wall. slide 23,consisting essentially of a rectangular shaped frame is slidably carriedwithin the channels of and between the upper and lower tracks 21, 22.

A link 24 has its lower end dropped freely through a slot 25 cut in thehorizontal art of theleg extending. from the lower trac 22 at a locationa trifle forward of the mid-point thereof. The upper end of the link 24is pivotally connected to the front member of the slide 23 and a doorlink 26 has its rear end pivoted to the link 24between the track 22 andthe slide 23. The door link 26 passes freely through the corner post 27and out to the oven door 28 to be pivoted thereto by its forward end,vwhereby,opening of the door 28 will pull the link 26 forwardly to rockthe link 24 about its enga ement with the track 22 to in turn pull thesfide 23 forwardly along the ,tracks21, 22, the travel of the slidebeing multiplied as compared to that, of the link 26 by reason of t eleverage set up through the link 24.

Short channel bars 29, 30, 31, and 32 are fixed to the rear verticalmember of the slide 23 to extend respectively over and above each of therack guides, the legs of the channel bars being turned upwardly, and ineach of the bars is loosely positioned a short bar 33 to have its innerend pivoted, to and rockably carried between the lie" of the channel barwhereby the bar 33 wi normall rest horizontally along the channel bar,ut may be rocked upwardly therefrom. The outer free end of the bar 33has a plate 34 fixed thereto in vertical relation. This plate 34 has acentral notch 35 cut in ts lower edge, from either side of which notch,the plate curves or slopes upwardly, Fig. 2.

The oven racks 11 and 12 are formed in the usual manner by weld a numberof wires across a rectangular wire frame. To the outermost of each ofthese welded wires is rockably secured thereunder the release wire 36 inparallel relation thereto. The forward end of the wire 36 has anout-turned end 37 whilethe rear end is in-turned to be adapted to becarried into the path of the plate 34.

' Referring principally to Fig. 2 of the drawing, the upper plate 34 ishereshown as being in its normal position with the rear transverse wireof the rack 11 engaged by the notch of the late. As the door 28 isopened and lowered the door being here shown as ofthe t pe hinged to theoven by its bottom edge), the connecting link 26 rocks the link 24 topull the slide 23 forwardly to, in turn, through no the plate 34, pullthe rack 11 forwardly to 34 whereby the cause it to extend somewhat fromthe oven. Closing. the door 28 returns the oven rack 11 through the samemechanism. The lower rack 12 is here shown as not being engaged by oneof the lower plates 34 and hence remains stationary. By closing the door28, the rack 12 may be engaged by the plate 34 adjacent thereto as theplate 34 is moved rearwardly to have it lift u over the rear racktransverse member and rop down thereover to have the notch 35 thereinengage about the transverse member, the plate being rocked upwardly byreason of its rear inclined edge sliding over the rack member. Either orboth racks may be released from the engaging plates 34 by pushingdownwardly on the ends 37 of the release wires 'to cause the other endsto push upwardly and lift the plates 34 out of enga ement with theracks. Either or both rac s may also be .released from the plates 34 andpushed back into the oven guld against the rear wall thereof so that therear transverse members of the racks are carried back of the rear limitof travel of the plates plates can not then en the rack members and thedoor 28 is then free to be opened and closed without moving the racks.From that innermost position, either or both of the racks may be pulledforwardly slightly to slide the rear members thereof into engagementwith the plates 34.-

Simi ar the racks may be released from the plates 34 and pulled outfreely from the oven and then returned to,be en aged by the plates 34 byenterin the rac transverse members under the p ates 34 from the forwardinclined edges thereof. Each of the plates 34 drop normally by the pullof gravity and remain dro ped until lifted by the oven rack members eingpushed against the cam-like inclined front or rear edges.

While we have here shown and described our;invention in the one bestform as now known to us, it is obvious that structural changes may bemade therein without departge nel bar extending over t aaeqaee ing fromthe spirit of the invention and we,

, therefore, do not desire to be limited to that precise form, nor anmore than may be required by the following claims.

We claim:

1. In an oven, the combination with a slidable rack and a door, of aslide, connectin linkage betweenthe door and the slide, an a plate'rockably carried on the slide in the path of said rack, said platebeing adapted to rock into engagement with the rack upon travelthereover, the oven being of such length that the rack may be positionedto such a rearward extent that when the slide and plate are in theirmost rearward position the rack is out of engagement with the late.

2. In an oven, the combination with a slidable rack and an oven door, aplurality of vertically spaced rack guides, a slide positioned betweenthe rack guides and the oven wall, a link (pivoted to the slide andhaving its free end ropped through a slotted member, a link pivotallyinterconnectin said link between said slide and the slot member and thesaid oven door, and a rack engaging plate hinged to said slide to swingu wardly 'adf'acent each of said rack uides, an a rockab e plate releasewire on t e rack having an extension laterall under the plate. 7

3. In an oven, the combination with a slidable rack and an oven door, aplurality of vertically spaced rack guides, a slide positioned betweenthe rack ides and the oven wall, a link ivoted to t e slide and havingits free end ropped througha slotted member, a second lin pivotallyinterconnecting said first link between said slide and the slottedmember and the said oven door, and a rack. engagin plate hinged to saidslide to swing upwa ly adjacent each of said rack es. 4. Inan oven, thecombination with a slidable rack and an oven door, a plurali ofvertically spaced rack ides having a ane rack guides, a slide positionedbetween the rack guides and the oven wall, a link pivoted to the slideand having its free end drop ed thrgplgh a slotted member, a second 1ipivo y interconnecting said first link between said slide and.

the slotted member and the said oven door, and a rack engaging platecarried by said slide ad acent sac of said rack guides each of saidplates being hingedly suppo in a channel bar extension from the slide tobe fre?K to be rocked into engagement with the rac -5. In an oven, thecombination with a slidable rack and an oven door, a luralit ofvertically spaced rack guides, a s ide bac of the guides, a link ivotedto the slide and having its free end ropped through a slotted member, asecond link pivotally interconnecting said first link between said slideand the slotted member and the said oven door, and

a rack enga g plate carried in said slide adjacent eac of said rack guies, each of said plates being hingedly supported irom the slide to befree to be rocked into engage- 5 ment with the rack, and each of saidplates having its under edge centrally notched and inclined upwardlytherefrom both forwardly and rearwardly,

6. In an oven, a rack, a plurality of verti- 10 sally spaced rackguides, a slide adjacent said guides, a rockable rack engaging platecarried by the slide at each rack guide, and a plate release wirecarried by the rack the oven being of such length that the rack may 35be positioned to such a rearward extent that when the slide and plateare in their most rearward position the rack is out of engagement withthe plate.

7. In an oven, a rack, a plurality of verti- 20 cally spaced rackguides, a slide 3d] acent said ides, a rockable rack engaging latecarried by the slide at each rack gui e, a plate release wire carried bythe rack, a door on the oven, linkage connecting the slide and the 25door to effect movement of the slide upon movement of the door, therearward travel of the slide being limited to permit the rack to remainat will in a rear position out of engagement with said plate. 39 Intestimony whereof we aflix our signatures.

MILO G. FORSYTH, BOY LASITER.

